System oe teeating



Patented June 29, 1926.

. UNITED STATES HARRY P. TABER, OF WILMINGTON, DELAWARE.

SYSTEM on reafirma on..

Application filed August 19, 1921.

This invention relates to an improved means for and method of treatingoil, and more particularly to the treatment of such oils as linseed andChina wood, and other sovcalled drying or semi-drying oils.

In the making of varnishes, printing inks or other substances which havefor their base Y or part of their makeup, linseed, China wood, poppyseed, or' any of the so-called drying or semi-drying oils, it has beenthe practice, and often necessary, to body or thicken these oilsV byoxidation, such as by blowing with air, boiling, or by appliedmechanical means. Often in systems as heretofore conducted, lack ofattentionover heating, under-development, or other causes have resulted,in an unsatisfactory product which in many instances has been a spoiledproduct. In the case of China wood oil particularly, when the same issubjected to a temperature which is'too high, or brought to a lowertemperature but for too long a time, it polymerizes, and the batch ofoil is thus ruined for varnish purposes.

One object of my present invention is to obviate the difficulties anddefects in the treatment of oils to body the same as'heretoforepracticed, and" to so treat the oil that the element of danger shall bereduced to a negligible quantity, and to insure the obtaining of aproduct which shall be uniform throughout.

A further object isV to so treat oil of the charactersspeciiied that acontinual flow of oil may be had, and so that every part of the oilshall, during such flow, be subjected to air and also brought to atemperature previously decided upon and for any length of time which maybe found necessary for the proper bodying or thickening of the oil.

With these and other objects in view, the

Y invention consists in certain features as hereinafter set forth andpointed out in the claims.

In the accompanying drawings, which show an embodiment of an apparatuswith which my invention may be carried into effect; Figure 1 is asectional view; Figure 2 is a perspective view of the tank, and Figure 3is a perspective view of a plurality of dividing partitions and meansfor supporting the same.

1 represents an elongated tank which may be made of suitable metal anddisposed over a source of heat. Such source of heat may Serial Np.493,604.

be a heated oil bath as indicated at 2, vand the oil of thisfbath may beheated by any suitable gas heater 2'al or electric or other heater, orthe tank may be heatedl directly with the use of such heater locatedunderV said tank.

In the embodiment of the invention shown in the drawings, the tank l isdividedV by a plurality of partitions 3, 4, 5, 6, which extend `upwardlyfrom the bottom of the tank and terminate at their upper edges be lowthe plane of the open top of the tank.

The upright partitions are so disposed as to form chambers orcompartments 7, 8, 9, l0, 11,-the two end'chambers or 'compartments 7andV ll being each one-half the width of the-others.

A frame consisting of parallel bars 12 are disposed over the tank andmay rest freely' The frame bars on .the ends of the latter. 12 havesecured to them, the upper edges of partitions 13, 14, 15 which dependinto the chambers 8, 9, 10 and dividel said chambers into chambers ofthe same size Vas the end chambers 7 and 11.k The partitions 13, 14, 15are suiiicientin length to extend from one side wall to the other of thetank and are ofsuch depthy as to terminate labove the bottom of thetank, thus permitting the chambers at respective sides of each partition13, 14, 15 to communicate with each Vother at the bottom of the tank.

Oil from a suitable supply, indicated at 16, is provided to discharge inthe lirst com-` partment 7 and a discharge outlet 17 is provided toreceive treated oil from the last compartment 11 and deliver it to asuitable container or to a condenser or other suitable device to effectrapid cooling.

It isevident that oil discharged into the first compartment must, inorder to reach the partition 3 and enter the next compartment, fromwhich it will pass, under the partition 13, to the next compartment'andafter filling the lat-ter it will overflow the rportion d and enter thenext c ompartinent,

bottom of the tank and exposed to the.

atmosphere to effect oxidation; kIt is apparent that in the flow of theoil through the apparatus, every part of itf-must come in ContactVwitlrthe heated bottoni of the tank when it flows under the dependingpartitions lf3-l5, and it is also evident that every part of the oilmust be exposed to the air as it flows over the partitionsMS-(. Thealternate contact with heat and .Y air brings about a more rapid VandAefficient oxidation or bodying of the oil than when o il is treated' bythe methods heretofore employed, and gives a uniformity of treat mentwhich has not heretofore been accomplished, so far as I ain aware.V

The rate of flow of the oil may be regulated as previously stated and itis eyident that the temperature at which the il is to be treated may beregulated by controlling, by any suitable means, the heat source. liththe use of my improved system, the oil maybe heated lfrom 350 to 600? F.

Itis evident that when the proper degree of heat *for the .particularbath of oiltobe treated, has been Vdetermined and obtained; the lengthof time the oil should be treated has been determined, and the rate offlow adjusted, it is possible to obtain acontinuous flow of heat-treatedoil from the apparatus. For example, let it be assuined that the supplytank when filled and ready to iiow, contains one gallon of oil, and thatit isvdesired to bring the oil to a temperature of 20() degrees for tenminutes. The heat will be adjusted to 200 degrees, the rate of flow soset that one gallon will fiow through the apparatus in ten minutes (thisgallon representing the cubic contents of the treating tank) and if thesupply tanl; is allowedto furnish a continuous stream ,of oil, lthere'will be also a continuous stream of heattreated oil flowing from theoutlet of the treating tank, and every part of the oil will havek beenbrought in alternate Contact with air and with heat for the perioddecided upon and at the temperature desired. As di'iierent oils anddifferent batches of the samev type of oil may require different tersPatents, is 2- v l. The method of treating drying oils which consists inestablishing a continuous gravity flow of an undivided 'body of oil andsubjecting the flowing body of oil alternately to the action of heat andair.

2. The method of treating 4drying' `oils which consists in establishinga continuous gravity flow of an undivided body of oil, repeatedlysubjecting the flowing body of oil to the action of heat, and subjectingthe flowingbody of oil to the action of air after each heat treatment.

3. The method of treating drying oils which consists in establishing acontinuous gravity flowvof an undivided body of oil over a pathextending kalternately downe wardly and upwardly, and subjecting theflowing body of oil to the action of heat at the low points of its pathand to theV action of atmospheric air at the high points of its path. l

t. The method of treating drying oils which consists in causing anundivided bodyiof oil to flow continuously by gravity alternatelycontact with and away` from a heated surface, and exposing the body ofoil to the action of atmospheric air in the intervals when itisawvay'fro/m the heatedV surface. f

In testimony whereof, have signed this specification.

HARRY i?. TABER.

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